| Asenovgrad to Oestrich-Winkel | 975.95 mi (1,570.64 km) |
| Asenovgrad to Offenburg | 933.74 mi (1,502.70 km) |
| Asenovgrad to Oftersheim | 932.73 mi (1,501.08 km) |
| Asenovgrad to Ohrdruf | 904.85 mi (1,456.21 km) |
| Asenovgrad to Ohringen | 890.69 mi (1,433.43 km) |
| Asenovgrad to Olbernhau | 810.45 mi (1,304.30 km) |
| Asenovgrad to Olching | 785.10 mi (1,263.50 km) |
| Asenovgrad to Oldenburg | 1,087.40 mi (1,750.01 km) |
| Asenovgrad to Oldenburg in Holstein | 1,061.58 mi (1,708.45 km) |
| Asenovgrad to Olfen | 1,058.89 mi (1,704.12 km) |
| Asenovgrad to Olpe | 1,016.94 mi (1,636.61 km) |
| Asenovgrad to Olsberg | 1,005.44 mi (1,618.10 km) |
| Asenovgrad to Oranienburg | 917.56 mi (1,476.67 km) |
| Asenovgrad to Ortenberg | 947.53 mi (1,524.90 km) |
| Asenovgrad to Oschatz | 847.86 mi (1,364.50 km) |
